Table 5.

Predictors of Pathologic Upstaging in cT2N0 Patients Undergoing Primary Surgical Resection without Induction Therapy. Univariate and Multivariate Analysis of 482 Patients.

Characteristic	Univariate			Multivariate
	OR	95% CI	P	OR	95% CI	P
Gender			0.01			0.02
Female	1.00			1.00
Male	1.78	1.10-2.88		1.85	1.07-3.18
Zubrod Score			0.03			0.04
0	1.00			1.00
1	1.75	1.15-2.66		1.69	1.06-2.69
2	2.71	0.98-7.47		3.71	1.23-11.18
3	1.72	0.47-6.27		1.42	0.35-5.71
Prior Thoracic Surgery			0.03			0.01
No	1.00			1.00
Yes	0.51	0.27-0.96		0.45	0.23-0.86